Ok, so I replaced my radiator because it was leaking... no more leaks (thanks to everyone who diagnosed the problem).

Now, the car is overheating, the fan won't come on, and the vents blow cold air when I turn the car on and it warms up. I am thinking its because I may not have bled the system properly? Anyone have any thoughts/insights? The fan and everything worked fine before the install...

 

check your fan switch sensor..who installed your radiator?maybe someone unplugged something

 

I installed it.. and I replugged the switch in also

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VolpeOwnsU &raquo;</TD></TR><TR><TD CLASS="quote">... I am thinking its because I may not have bled the system properly? Anyone have any thoughts/insights?...</TD></TR></TABLE>I think you need to get all the air bubbles out...

 

Thanks, I'll try again when I get home, then go to Honda because I don't have the equipment or place to take out the thermo and ect switch to test them.

 

air bubbles shouldn't affect it but sounds like your temp sending unit is blocking off the flow to the heater core. also take out your Thermostat and ran some water through to see if everything flows through. If it's not then you have a clot somewhere which is probably the temp sensor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VolpeOwnsU &raquo;</TD></TR><TR><TD CLASS="quote">Thanks, I'll try again when I get home, then go to Honda because I don't have the equipment or place to take out the thermo and ect switch to test them.</TD></TR></TABLE>You can check the fan circuit pretty easy. Unplug the fan switch & jumper the wires with a paper clip. That should make the fan(s) come on - one or both depending on year/model.

Did you have the thermostat out when you changed the radiator? Did you get the gasket in wrong so it blocks the T-stat from opening?

 

No, I didn't touch the thermostat becuase I can't get the simple tools I have I have on the thermo cover bolts. I will check the fan circuit switch but I think its the themostat... I squeeze both the upper and lower radiator hoses and it seems like neither is carrying fluid under pressure

 

I think you should rebleed, its the simplest, most likely problem. FYI, I have never actually seen my fan turn on, as strange as that sounds.

 

rebleed the system.!!!

maybe jack up the pass side a little to get any air bubbles out of the system.

 

So to properly rebleed... I should first open the little plug at the bottom of the radiator and let a little bit of fluid out, the put the cap on loosely and let the engine run until the fan comes on?

Is this something Honda would be able to diagnose easily and fix for a reasonable price? I would love to do it myself yet my tools and time are limited. I need to have it done by Thursday night because I have a long drive ahead of me Friday.

 

can you find a 10mm socket?if so you can get at the thermostat

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VolpeOwnsU &raquo;</TD></TR><TR><TD CLASS="quote">So to properly rebleed... I should first open the little plug at the bottom of the radiator and let a little bit of fluid out, the put the cap on loosely and let the engine run until the fan comes on?

Is this something Honda would be able to diagnose easily and fix for a reasonable price? I would love to do it myself yet my tools and time are limited. I need to have it done by Thursday night because I have a long drive ahead of me Friday.</TD></TR></TABLE>

no, follow the upper rad. hose to the engine. On the waterneck, there is a bleeder screw, it is loosened by a 12mm wrench or socket. Dont take it out all the way, Just loosen it a turn or so. Start car with rad cap off and add water as needed until all "air bubbles" stop coming out of the bleeder screw and it a steady stream of coolant/water. Tighten bleeder screw.

Be sure to watch the temp gauge very closley. You might need to do this a few times like I had to do.

 

Thanks, I will check this out...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1_bad_EF &raquo;</TD></TR><TR><TD CLASS="quote">... Just loosen it a turn or so. Start car with rad cap off and add water as needed until all "air bubbles" stop coming out...</TD></TR></TABLE>Make sure your heater control is set all the way to hot when you do this. Air bubbles can hang out in the heater core.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">Make sure your heater control is set all the way to hot when you do this. Air bubbles can hang out in the heater core.</TD></TR></TABLE>

oh yeah, that too!!

thanks jimblake

 

I had the heater set all the way to hot and on full blast when I did it... the car blows cold air the entire time I let it idle up to the point of it starting to overheat

 

the car overheated at one point right? If so then the thermostat could be fugged from that. It could be stuck and not opening so no coolant is flowing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1_bad_EF &raquo;</TD></TR><TR><TD CLASS="quote">the car overheated at one point right? If so then the thermostat could be fugged from that. It could be stuck and not opening so no coolant is flowing. </TD></TR></TABLE>When the engine starts to warm up, the upper radiator hose should get hot when the T-stat starts opening. If the hose never gets hot, that pretty much says the T-stat is stuck closed.

If your heater never gets hot either, maybe your heater control cable is busted. Then you aren't really opening up the heater valve when you turn the control over to hot.

 

Heater is blowing hot air now, so I think its properly bled... the fan still isn't coming on and the upper rad hose isn't getting hot. I'm assuming its the thermo then?

 

bump because im having the same problem

 

Well here's what happened... the radiator was replaced, bled over and over and the prob worked itself out... my fan still isn't coming on but i checked it and its not the fuse or motor. The problem is the sensor I beleive. I'm gonna pick up a new one and go from there.

 

bump hehe, havin the same problem... how much do a temp sensor run for?
Im newb

 

Temp sensor will cost about $30 bucks.... check hondautomotiveparts.com for the honda part, you may be able to get a generic piece cheaper elsewhere